Investigation and dynamic analyses of rockslide-induced debris avalanche in Shuicheng, Guizhou, China

Zhang, Yanbo; Xing, Aiguo; Ke, Jin; Zhuang, Yu; Bilal, Muhammad; Xu, Sai; Zhu, Yao-Qiang

doi:10.1007/s10346-020-01436-0

Cited by 35 publications

(11 citation statements)

References 40 publications

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“…A large landslide occurred at Jichang Town, Shuicheng County, Guizhou Province (hereinafter called "the Shuicheng Landslide") at about 20:40 on 23 July in 2019 [10,[18][19][20]. During this event, 21 houses were destroyed and nearly 1600 people were affected, including 43 dead and nine missing, with direct economic loss reaching 190 million yuan [10,21]. Previous studies show that the Shuicheng landslide is characterized by shearing out from a high position, high speed, and long movement distance, which is indicative of a typical single high-level and long-runout landslide [11].…”

Section: Introductionmentioning

confidence: 99%

Development Characteristics and Causes of a Fatal Landslide Occurred in Shuicheng, Guizhou Province, China

Huang

et al. 2022

IJGI

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At about 20:40 on 23 July 2019, a high-level and long-runout landslide occurred in Jichang Town, Shuicheng County, Guizhou Province (hereafter called the Shuicheng landslide). This slope failure was highly devastating, and most of the local residents were severely affected, including 52 dead or missing. Based on the information provided by field investigations, drilling boreholes, and Google Earth, we describe the landform and stratigraphy characteristics of the Shuicheng landslide in this study. Additionally, the dataset of 1158 ancient landslides near the Shuicheng landslide is obtained by Google Earth and ArcGIS, including their morphological scales and spatial distribution characteristics, to analyze the landslide development preference in this region. Furthermore, the causes of the Shuicheng landslide are discussed by analyzing the effects of active tectonic activities on the broken basalt and the steep terrain, as well as the trigger action of continuous heavy rainfall. Finally, a previous empirical prediction formula of sliding distance is verified by the Shuicheng landslide parameters and is applied into the width range calculation of the ancient landslide risk zones, which is a kind of risk source for future landslides. The result indicates the area up to ≈3500 m away from the landslide risk source should be concerned during engineering construction in the study area. This study provides significant scientific guidance for the risk management of potential landslide hazards in this area.

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Section: Introductionmentioning

confidence: 99%

Development Characteristics and Causes of a Fatal Landslide Occurred in Shuicheng, Guizhou Province, China

Huang

et al. 2022

IJGI

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“…The occurrence of rock avalanches has increased significantly in recent years and with sometimes catastrophic results, due to large volumes (>1 × 10 6 m 3 ), extremely high velocities (>20 m/s), and long runouts (>1 km) (Evans et al, 2007;Sun et al, 2011;Huang et al, 2012;Pudasaini and Miller, 2013;Lucas et al, 2014;Zhu et al, 2019;Friele et al, 2020;Zhang et al, 2020;Zhao et al, 2020). A typical example of such a disaster is the Xinmocun rock avalanche that occurred in China on June 24, 2017 (Fan et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Insights into the differential fragmentation processes in rock avalanche emplacement from field investigation and experimental study

et al. 2022

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Fragmentation is a universal phenomenon associated with rock avalanches, resulting in an abundance of complex sedimentological structures. If studied in detail, these structures can provide insights into rock avalanche emplacement processes. Here, six typical avalanche cases are carefully analyzed in conjunction with an analogue experiment. Findings reveal the carapace facies is characterized by clast-supported structures composed of large blocks with sedimentological structures that include retained stratigraphic sequences, imbricate structures, and jigsaw structures. The body facies presents a high degree of fragmentation, with block-rich zones, fine matrix-rich zones, jigsaw structures, and inner shear zones. The basal facies displays the highest degree of fragmentation, however, it is mainly composed of millimeter grains with thin shear strips. Consistent with the field investigations, differential fragmentation is also observed in the analogue tests, with the vertical dimension of the carapace facies mainly fragmented along the lines of pre-existing structures; the body facies fragmented with an abundance of new fractures; and the basal facies fragmented into fine grains. Meanwhile, layer sequences preserved in longitudinal and vertical profiles are also observed in the analogue tests, indicating a low disturbance in the propagation. We, therefore, propose that a process characterized by a sparse state, dominated by collisions, minor disturbance, and pervasive dynamic fragmentation likely occurs in the carapace facies, with fragmentation mainly controlled by the breakage of pre-existing, fully-persistent structures. The body facies is mainly controlled by the fracturing of the weak, less-persistent structures, and the basal facies displays the highest degree of fragmentation with an abundance of new fractures. In the entire propagation, the avalanche mass displays low-disturbance laminar flow.

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“…Many of the most seismically energetic landslides are classified as rock avalanches (following Hungr et al., 2014), a landslide type with volumes typically greater than 10 6 m 3 and peak velocities often exceeding 100 km/hr (28 m/s) (Hermanns, 2013). Numerical runout models and seismic inversion analysis have both been used in studies of landslide dynamics, and the two are increasingly being used together to help constrain rheological parameters, failure initiation sequences, and erosion processes (e.g., An et al., 2021; Favreau et al., 2010; Moretti et al., 2012, 2015, 2020; Schneider et al., 2010; Zhang, Y. et al., 2020). Seismic data have shown great promise as a constraint on landslide runout models because it provide information about timing and event dynamics during the event, leading to improvements in their application in landslide hazard and risk assessments.…”

Section: Introductionmentioning

confidence: 99%

“…Much of the previous work on landslide modeling constrained by seismic signals has focused on calibrations for single case histories (e.g., An et al., 2021; Moretti et al., 2012, 2015, 2020; Schneider et al., 2010; Zhang Y. et al., 2020). The objective of this paper is to build on methodologies put forward by Moretti et al.…”

Section: Introductionmentioning

confidence: 99%

Insights on Multistage Rock Avalanche Behavior From Runout Modeling Constrained by Seismic Inversions

et al. 2022

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Inversion of low‐frequency regional seismic records to solve for a time series of bulk forces exerted on the earth by a landslide (a force‐time function) is increasingly being used to infer volumes and dynamics of large, highly energetic landslides, such as rock avalanches and flowslides, and to provide calibration information on event dynamics and volumes for numerical landslide runout models. Much of the work to date using landslide runout modeling constrained by seismic data has focused on using single‐phase models with frictional or velocity‐weakening rheologies. Awareness of multistage landslide initiations is increasing, with discrete failures separated in time contributing to the final impact of an event. Our work utilizes a method for incorporating seismic data as a calibration constraint for landslide runout models, considering variable rheologies and different initiation conditions. This study presents a systematic examination of multiple rheologies and initiation conditions, and shows how these factors affect the force‐time function derived from the landslide runout model. Our work confirms that, while rheology and fragmenting or initially coherent initiations affect the force‐time function, multiple collapses separated by tens of seconds have the greatest impact on the shape and amplitude. We apply this method to the analysis of three real rock avalanches to better constrain plausible initiation conditions and rheology parameters using both seismic and field data. This study provides insights on how assumptions about the initiation dynamics of the source zone and the runout model definition can aid in the interpretation of seismic inversions for multistage rock avalanches.

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Investigation and dynamic analyses of rockslide-induced debris avalanche in Shuicheng, Guizhou, China

Cited by 35 publications

References 40 publications

Development Characteristics and Causes of a Fatal Landslide Occurred in Shuicheng, Guizhou Province, China

Development Characteristics and Causes of a Fatal Landslide Occurred in Shuicheng, Guizhou Province, China

Insights into the differential fragmentation processes in rock avalanche emplacement from field investigation and experimental study

Insights on Multistage Rock Avalanche Behavior From Runout Modeling Constrained by Seismic Inversions

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